18800180831018 has 16 divisors (see below), whose sum is σ = 29426552280576. Its totient is φ = 8991335134320.

The previous prime is 18800180831017. The next prime is 18800180831063. The reversal of 18800180831018 is 81013808100881.

It is not an unprimeable number, because it can be changed into a prime (18800180831017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6792263 + ... + 9150693.

It is an arithmetic number, because the mean of its divisors is an integer number (1839159517536).

Almost surely, 2^{18800180831018} is an apocalyptic number.

18800180831018 is a deficient number, since it is larger than the sum of its proper divisors (10626371449558).

18800180831018 is a wasteful number, since it uses less digits than its factorization.

18800180831018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531749.

The product of its (nonzero) digits is 98304, while the sum is 47.

Adding to 18800180831018 its reverse (81013808100881), we get a palindrome (99813988931899).

The spelling of 18800180831018 in words is "eighteen trillion, eight hundred billion, one hundred eighty million, eight hundred thirty-one thousand, eighteen".